TOTO Supreme

Does anyone have experience with the TOTO Supreme one-piece model? We are remodeling and toilet choice is limited by a small counter extension that goes above the toilet and limits the height of the tank. (It's a small bathroom - I need the counter space. We are buying the TOTO Drake for the other bathroom, but it is too tall for this one. Our other option is the Kohler Gabrielle. I've ruled out the Kohler San Raphael. We have an old version of that and it does not flush well.